[wnight]

Your phone number and email address were never meant to be secret. That only provides security by obscurity and leads to exactly this problem - you, a user, being upset when the security you were led to expect doesn't align with reality.

If you wish to not receive certain communications the way to do this is by screening incoming connections/contents. This works, unlike secrets.

Now, understanding that what you wanted to do (keep an email address secret) is a bad idea - it won't do what you want, you can see why those who understand don't care about this "privacy" - it isn't.

Claiming to authorize your email address being shared with CompanyX but not CompanyY is like saying "Here's my phone number, I'm only lettingVerizon subscribers know it, to keep AT&T from snooping on which of their users calls me." It's just nonsensical.